1. peser sur le piton

Piton here refers to a button that can be pressed, like on a keyboard, remote control, telephone, etc.

2. une couple de fois

une couple de foisune coup’ de fois(sounds like une coupe de fois)
a couple times, a few times

The expression une couple de… only survives in Québec. In the rest of the francophonie, it has fallen out of use. It will obviously remind you of the English expression “a couple (times, weeks, questions, etc.),” which came from French.

You’ll often hear couple pronounced without the -le ending in Québec, making it sound like coupe.

When couple is used in this sense, it’s feminine: une couple de fois, une couple de semaines, une couple de questions, etc.